Abstract
The Holt relation d = Kϱ−1/2 between dislocation cell diameter d and average dislocation density ϵ is found to apply to Mo–50wt% Re when K = 4. Comparison with other published dislocation cell data shows that K does not remain constant, but varies from metal to metal. The effect of stacking fault energy on the K value is demonstrated to be significant. Il a ete constate que la relation de Holt d = Kϱ−1/2 entre le diametre de la dislocation de la cellule et la densite 7egr; de la dislocation moyenne est applicable a Mo-50 wt% Re quand K = 4. Une comparaison avec d'autres donnees publiees sur la dislocation de la cellule fait ressortir que K ne demeure pas constant, mais varie de metal a metal. Il est demontre que l'effet d'emmagasinement d'energie de fuite sur la value K est significatif.
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